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Vapor cell geometry effect on Rydberg atom-based microwave electric field measurement |
| Linjie Zhang(张临杰)1,2, Jiasheng Liu(刘家晟)1,2, Yue Jia(贾玥)1,2, Hao Zhang(张好)1,2, Zhenfei Song(宋振飞)3, Suotang Jia(贾锁堂)1,2 |
1 Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China;
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
3 National Institute of Metrology, Beijing 100029, China |
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Abstract The geometry effect of a vapor cell on the metrology of a microwave electric field is investigated. Based on the splitting of the electromagnetically induced transparency spectra of cesium Rydberg atoms in a vapor cell, high-resolution spatial distribution of the microwave electric field strength is achieved for both a cubic cell and a cylinder cell. The spatial distribution of the microwave field strength in two dimensions is measured with sub-wavelength resolution. The experimental results show that the shape of a vapor cell has a significant influence on the abnormal spatial distribution because of the Fabry-Pérot effect inside a vapor cell. A theoretical simulation is obtained for different vapor cell wall thicknesses and shows that a restricted wall thickness results in a measurement fluctuation smaller than 3% at the center of the vapor cell.
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Received: 17 November 2017
Revised: 01 January 2018
Accepted manuscript online:
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PACS:
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32.80.Ee
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(Rydberg states)
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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84.40.-x
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(Radiowave and microwave (including millimeter wave) technology)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA03044200 and 2016YFF0200104), the National Natural Science Foundation of China (Grant Nos. 91536110, 61505099, and 61378013), and the Fund for Shanxi "331 Project" Key Subjects Construction, China. |
Corresponding Authors:
Linjie Zhang
E-mail: zlj@sxu.edu.cn
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Cite this article:
Linjie Zhang(张临杰), Jiasheng Liu(刘家晟), Yue Jia(贾玥), Hao Zhang(张好), Zhenfei Song(宋振飞), Suotang Jia(贾锁堂) Vapor cell geometry effect on Rydberg atom-based microwave electric field measurement 2018 Chin. Phys. B 27 033201
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